1.6      11.03.2013
           - fix docs

1.5      15.02.2013
           - add mysql() output format
           - fix building on threaded perls

1.4      14.02.2013
           - SEC, MIN, .., YEAR are now constant objects (read only) to avoid wrong usage

1.3      14.02.2013
           - add Storable hooks

1.2      12.02.2013
           - fix test for some more platforms

1.1      12.02.2013
           - fix test for some platforms

1.0      10.02.2013
           - first release